Briquets and other product composed of bonded divided material.



UNITED STATES PATENT OFFICE.

DANDRIDGE I. BIB-B, OF NEW YORK, N. Y.. ASSIGNOR To CONTINENTAL PROCESS CORPORATION, OF BRIARCLIFF VILLAGE. NEW YORK. A CORPORATION OF NEW YORK.

BRIQUETS AND OTHER PRODUCT COMPOSED OF BONDED DIVIDED MATERIAL.

No Drawing.

v Products Composed of Bonded Divided Material. of which the following is av full, clear. and exact description. I

My invention relates to a new and improved cohering mass consisting of granular. powdered. fibrous. Or any sub-divided material held together in a strong coherentmass by a water-resistant binder,prodiuted from the liquor commonly known as waste sultite lllllOl'. here-totO-re a waste product m i the manufactureof chemical wood pulp.

Compositions of matter produced by this binder are useful for many purposes; for example, they may be briquets of ore, flue dust or concentrate,bricks of sand Or gravel, insulating or building materialsot mica, asbestos or other fibrous minerals: or they be mixtures of the binder with tuel such as coal dust for r'uel briquets. 'lhese'conmositiOns are. characterized by strength and hardness, which, of course, .varics with the nature of the granular, powdered. fibrous.'

material and the purpose to which it is to be applied, and by insolubility in water, being undisintegrated by moisture.

Many attempts have heretofore. been made to utilize waste sulfite as a. binder for briquets and to unite together varioussubdivided materials intO coherent masses either by adding other com )ounds to the liquor or by the agency of lea-t, Or both, but they have been unsuccessful because the products on the one hand have been structurally weak, or else. having the necessary strength, they have been'disintegrated by the action of moisture to such an extent as to render them practlca-lly useless. My products are characterized by strength, re-

- sistance to abrasion and a great degree of resistance to the action of water.

In making my products, I take granular, powdered, fibrousor other subdivided material, which I include by the generic. term divided and mix it thoroughly with the waste sulfite liquor; the sulfite liquor may be Specification Of Letters Patent.

Patented ()ct 6. HH 5.

Application filed September 24, 1914. Serial No. 863,280.

used either at its original density or it may he evaporated to any rcquired density before it is mixed with the materialto be bound together. It it isuscd in its original condition. the mixture may be heated to a low temperature to evaporate a part oI the water in it while on the surlaceof the material to bebouud together. llaving obtained a suitable mixture. 1 press it into any required shape and heat the forms by exposing theml'or a short time to atemperature ol. preferably. about coo l liy exposure to this temperature the residue of waste sullitc liquor is couvcrtcd into a compound. insoluble in water. of great binding power, yielding products cliarzu-teriz d as-abovedescribed. the coherent lll;l. .\'t" being useful for many purposes such as those mentioned.

ln malv'ing a hriquet ol llue dust .I have found lllill a. satisfactory product embodyin my invention can be produced by taking an amount ol the waste sullite liquor. evaporated to a viscosity ol' about 30" or -32 lhiuna'ne ual to from six ((3) to eight (8) per cent. by weight of the line dust. thoroughly mixingthe lluc dust and evaporated liquor inany suitable mixing apparatus. pressing portions tlicrcol one a l'tcr another into the fie-rred process for forming llue dust l, riquets embodying my invention, but as will be evident to those skilled in the art may be modified without departing from the spirit of my invention or the scope ot' the appended claims.

In briqueting divided material other than flue dust I proceed ina smnlar manner, varying the proportions (d the binder 'l rom four per cent. to ten (10) percent. by

sultant briquet desired, but preferably sub jecting it to substantially the same heat treatment. 3

lVhat I claim thereforei'a-nd desire to secure by Letters Pateiiii i s',-

1. A cohering mass of compacted divided material held together by a binder consisting of a non-coked water-resistant residue w of waste sulfite liquor.

2. A coherent mass of granular inorganlc Copies' of this patent may be obtained for ,of Waste sulfite liquor.

- liquor.

Inaterial held-together by a binder co1i sist-' ing of a non-coked- Water-resismnt residue 3. briquet comprising flue dust held together by a binder consisting of a. non-coked Wa-terresist-ant residue of waste snlfite DANDRIDGE H. BIBB.

Witnesses:

H. B. BROWNELL,

, HENDERSON FcIIILL.

five cents each, by addressing the Commissioner of Patents, Washington, D. C. I 

